I can only say good things about the pairing honestly, combined with the May. I'm getting great clarity, it's musical and engaging and well balanced, as you'd expect from a US4/US5. The only qualifier is should add is that I haven't heard the Susvara on any other high end amps, so I'll fall short on comparisons. Fact is that I'm not at all interested in upgrading to any other solid state - I even resisted the Holo Bliss temptation (matching stack!).Been enjoying my Niimbus US5 Pro for a year now. Have it paired up with a Utopia and Atrium, but inquiring any Susvara or 1266 Phi TC owners on their pairings with the Niimbus? I want bass that goes deeper than the Utopia/Atrium.
I may add a tube amp in due time, but that is to have a different presentation rather than trying to improve on the US4+, and will not replace the Niimbus.
Hope it doesn't get any worse for you. For reference, I only get the crackles from the pot when adjusting volume - once I stop touching the volume control, all is quiet.I also get the crackling noise in the right ear cup- different than the volume pot clicking sound. It usually goes away after a second or two and does not happen when playing music. Hopefully not a sign of any issues but it doesn’t seem to be.